The Felice and Mildred Morris Autograph Collection consists of letters from numerous 19th- and early 20th-century actors, actresses, playwrights, and others associated with the theater, collected by the Morrises. Included are James Matthew Barrie, Edwin Booth, Dion Boucicault, Frances Hodgson Burnett, Wilkie Collins, Charlotte Cushman, Clyde Fitch, Charles Dana Gibson, Laurence Hutton, Louis Napoleon Parker, Adelina Patti, William Seymour, Otis Skinner, and Kate Wiggin.

The Autograph Collection includes letters from nineteenth and early twentieth century English, French, and American illustrators. A few manuscripts and illustrations are included as well.

The Robert Granville Caldwell Autograph Collection consists of correspondence and memorabilia of Caldwell, an American professor and public official.

Consists of letters, mostly autograph, from twenty-one United States Supreme Court justices, collected by Edward Ambler Armstrong and Richard Kaines.

The collection consists of an album of letters and autographs (1771-1902) of prominent Americans and Englishmen collected by Pyne, son of Moses Taylor Pyne (Princeton Class of 1877), while he was a young man.

Consists of autograph letters and documents of Princetonians collected by American chemist and collector, Russell W. Moore (Princeton Class of 1883).

Contains manuscripts, correspondence, documents, and photographs concerning the Throop and Throop Martin families of New Jersey. In addition to the family correspondence, there is an autograph collection and other miscellaneous items.

The Miriam Holden Collection consists of books, periodicals, manuscripts, clippings, photographs, cartoons, letters, and other materials about women and their achievements collected by Holden.

Consists of Americana dating, primarily, from the period of the American Revolution and the thirty years immediately following, collected by Straus.